Question

Simplifique as expressões.
a) 3(x + 4) – 2x
b) 4(x - 1) – 2(5 – x)
c) 5 + 6(2x + 1) - 4(3x – 8)
d) (x + 7) - (2x - 3) – (5 – x)

Answer 1

Vamos lá!

A )

3(x + 4) – 2x

3x+12−2x

(3x−2x)+12

x+12

B )

4(x - 1) – 2(5 – x)

4x−4−2(5−x)

4x−4−(10−2x)

4x−4−10+2x

(4x+2x)+(−4−10)

6x−14

C )

5 + 6(2x + 1) - 4(3x – 8)

5+12x+6−4(3x−8)

5+12x+6−(12x−32)

5+12x+6−12x+32

(5+6+32)+(12x−12x)

43

D )

(x + 7) - (2x - 3) – (5 – x)

x+7−2x+3−5+x

(x−2x+x)+(7+3−5)

5

Answer 2

Oie, Td Bom?!

a)

3(x + 4) - 2x

3x + 12 - 2x

x + 12

b)

4(x - 1) - 2(5 - x)

4x - 4 - 10 + 2x

6x - 14

c)

5 + 6(2x + 1) - 4(3x - 8)

5 + 12x + 6 - 12x + 32

5 + 6 + 32

43

d)

(x + 7) - (2x - 3) - (5 - x)

x + 7 - 2x + 3 - 5 + x

0 + 7 + 3 - 5

0 + 5

5

Ajudei?! Dúvidas?! É Só Chamar!